586. How long has it been since you’ve heard from your uncle?

587. When was the last time he wrote you?

588. I can’t recall how long it’s been.

589. I’m always disappointed when I don’t get any email.

590. I feel guilty because I haven’t written her lately.

591. What time is the mail delivered on Saturday?

592. The postman always comes at 2 o’clock.

593. I wrote to my uncle last night. I couldn’t put it off any longer.

594. I enclosed some photographs to my letter.

595. I didn’t know weather to send the letter airmail or not.

596. How long does it take for a letter to get to California?

597. Don’t forget to put stamps on the letter before you mail it.

598. He went to the post office to mail a letter and dropped the letter in the mailbox on the corner.

599. I attached some files to my email.

600. How did you sign the letter? Did you write, “Sincerely yours”?